One, you're doing something that you should follow a procedure to, and it's a very difficult thing, you're sloppy, you get it wrong. How should you be treated? You should probably be fired.

We see this general bagginess of the structure, the lack of concern with rules and the way that we're used to learning on the blackboard, and so we think that something has gone wrong.

But, here with kludgy material, and lousy drink -- we've been able to measure the speed of sound to -- not bad. Pretty good.

Now, if these were random doodles or decorations, we would expect to see a lot more variation, but instead what we find are the same signs repeating across both space and time.